OUTRAGE 25: Jack Plate Set Back - Moderated Discussion Areas

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Author Topic:   OUTRAGE 25: Jack Plate Set Back

JERRYCOFFEY posted 02-15-2008 04:33 AM ET (US)
On a Boston Whaler 1987 OUTRAGE 25 with 250-HP Yamaha, what would be the proper setback for a hydraulic jack plate?
Rob Pirie posted 02-17-2008 07:15 PM ET (US)
No such thing as proper set back but as a rule of thumb, for every 4 inches you set your engine back you can raise you engine one inch.
Rob
jimh posted 02-18-2008 09:17 AM ET (US)
With a jack plate you are limited in the set back by the dimensions of the device. The largest jack plate set back that I have seen is 12-inches. Many people are using 24-inch set back with brackets, so I cannot see any reason not to use the longest set back available with a jack plate. The weight and power of the engine may affect the size of jack plate that can be used. With a single engine on a 25-foot Whaler you should not have any problems with static trim due to do the added set back distance.
msl posted 02-18-2008 01:29 PM ET (US)
My motors are on 8" set back jack plates and I have 25-inch-shaft twin 150 OptiMax motors. On the notched-transom Outrage 25 [for twin engine installation it is] recommended to run 20" shaft. A jackplate can be installed to make up the difference in shaft lenght (most new outboards are 25" shaft lenght and some you can order in 20"). I purchased my boat used from the Great Lakes Region and the previous owner installed Panther Jackplates to have the motors installed at the proper height. I would not even consider to using these jack plates ever again as they have cost me several hundred in repairs (not made for salt water). Look at the CMC or Bob's jack plates, if you plan to go this route.
Mike
jimh posted 02-18-2008 01:58 PM ET (US)
I do not think the hydraulic jack plate requires a different set back distance than a non-hydraulic jack plate.

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Author	Topic: OUTRAGE 25: Jack Plate Set Back
JERRYCOFFEY	posted 02-15-2008 04:33 AM ET (US) On a Boston Whaler 1987 OUTRAGE 25 with 250-HP Yamaha, what would be the proper setback for a hydraulic jack plate?
Rob Pirie	posted 02-17-2008 07:15 PM ET (US) No such thing as proper set back but as a rule of thumb, for every 4 inches you set your engine back you can raise you engine one inch. Rob
jimh	posted 02-18-2008 09:17 AM ET (US) With a jack plate you are limited in the set back by the dimensions of the device. The largest jack plate set back that I have seen is 12-inches. Many people are using 24-inch set back with brackets, so I cannot see any reason not to use the longest set back available with a jack plate. The weight and power of the engine may affect the size of jack plate that can be used. With a single engine on a 25-foot Whaler you should not have any problems with static trim due to do the added set back distance.
msl	posted 02-18-2008 01:29 PM ET (US) My motors are on 8" set back jack plates and I have 25-inch-shaft twin 150 OptiMax motors. On the notched-transom Outrage 25 [for twin engine installation it is] recommended to run 20" shaft. A jackplate can be installed to make up the difference in shaft lenght (most new outboards are 25" shaft lenght and some you can order in 20"). I purchased my boat used from the Great Lakes Region and the previous owner installed Panther Jackplates to have the motors installed at the proper height. I would not even consider to using these jack plates ever again as they have cost me several hundred in repairs (not made for salt water). Look at the CMC or Bob's jack plates, if you plan to go this route. Mike
jimh	posted 02-18-2008 01:58 PM ET (US) I do not think the hydraulic jack plate requires a different set back distance than a non-hydraulic jack plate.